diff --git a/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/utils/BinaryHeap.java b/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/utils/BinaryHeap.java
index f99502b..31e7190 100644
--- a/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/utils/BinaryHeap.java
+++ b/be-graphes-algos/src/main/java/org/insa/graphs/algorithm/utils/BinaryHeap.java
@@ -136,18 +136,17 @@ public class BinaryHeap<E extends Comparable<E>> implements PriorityQueue<E> {
     }
 
     @Override
-    // on est là 
+    // on est là : tout faux utilise paircolletdown
     public void remove(E x) throws ElementNotFoundException {
-        ArrayList<E> temp = new ArrayList<E>();
-        for (E e : array){
-            if (e != x){
-                temp.add(e);
-            }
+        int id = array.indexOf(x);
+        if (this.isEmpty() || this.size()==0 || id >= currentSize || id == -1){
+            throw new ElementNotFoundException(x);
+        }else {
+            this.array.set(array.indexOf(x), this.array.get(currentSize-1));
+            currentSize--;
+            percolateUp(id);
+            percolateDown(id);
         }
-        for (int i=array.indexOf(x);i<array.size()-1;i++){
-            array.set(i, temp.get(i-1));
-        }
-
     }
 
     @Override
diff --git a/be-graphes-algos/target/classes/org/insa/graphs/algorithm/utils/BinaryHeap.class b/be-graphes-algos/target/classes/org/insa/graphs/algorithm/utils/BinaryHeap.class
index 54860ba..f815d5f 100644
Binary files a/be-graphes-algos/target/classes/org/insa/graphs/algorithm/utils/BinaryHeap.class and b/be-graphes-algos/target/classes/org/insa/graphs/algorithm/utils/BinaryHeap.class differ